{
  "manageEntity": {
    "action": "Save",
    "entityId": "1364292841",
    "entityType": "Track",
    "nonce": "0xb8a1f096c084f720450e6554066e7eb4e846a343d6683968b4cb144627a6f7f9",
    "signature": "0x1556c43490493365c95efc1dd4c2a96e36cdbfaad3491e258f0b165b36811b4b7c57828152552689360d3b4f810d2c4193bf2a9ecd63b89e1f87dc7ae4380e2c1c",
    "signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
    "userId": "633924738"
  }
}