Please find below an example of adding dynamic text into the "push_body":

in this example 3 custom fields were defined for the app and assigned value for every user through the integration:

• FirstName - A custom string field
• LastPurchase - A custom date field
• Balance - A custom numeric field

The format of adding dynamic text is: {Field_Name-Format} 

The list of formats for the different types can be found below the example

"push_body": "Hi {FirstName-firstCap}, you haven't purchased since {LastPurchase-MMM d} and you still have {Balance-currency}"

Formats:

Sting formats:

• caps - This switch capitalizes the first letter of each word
• firstCap - This switch capitalizes the first letter of the first word
• upper - This switch capitalizes all letters uppercase
• lower - All letters are lowercase

Numeric formats:

• curreny - Example $2,456,800

• comma - Example 10,000,000

• regular - Example 1000

Date formats:

• M/d/y - Example: 1/22/14

• M/d/yyyy - Example: 1/22/2014

• MMM d yyyy - Example: Jan 22 2014
• MMM d - Example" Jan 22
• E - Example: Sunday

• E MMM d - Example: Sunday Jan 22

• E MMM d yyyy - Example: Sunday Jan 22 2014

• E MMMM d yyyy - Example: Sunday January 22 2014

• h:mm a - Example: 7:08 AM

• h:mm:ss a - Example: 7:08:09 AM

• H:mm - Example:  22:35

• MMM d yyyy h:mm a - Example: Jan 22 2014 7:08 AM

• E h:mm a - Example: Sunday 7:08 AM

• E MMM d h:mm a - Example: Sunday Jan 22 7:08 AM

• E MMMM d yyyy h:mm a - Example: Sunday Jan 22 2014 7:08 AM

• E MMMM d yyyy h:mm a - Example: Sunday January 22 2014 7:08 AM

• M/d/y h:mm a - Example: 1/22/14 7:08 AM

• M/d/yyyy h:mm a - Example: 1/22/2014 7:08 AM

• days_ago - Example: 1 day ago (in 3 days)