I am sending a date of birth as follows;

    {
      "typeId": "SFCT_2",
      "value": "1952-10-07"
    },

But I am getting a response back:

[{"error":"INVALID_DATE_OF_BIRTH",
"cause":"Date of birth secondary field values must be a valid date not containing any time fields. 
These dates are not allowed to be in the future or more than 150 years in the past."}]

What is the correct format for the date of birth?

PS: That is Vladimir Putin's Birthday :)