{
  "manageEntity": {
    "action": "Save",
    "entityId": "712222330",
    "entityType": "Track",
    "nonce": "0x2b0721ea5a5462a768bbb67cd7971fffd6fe8f5966b476c7ee260116ce8aa7c6",
    "signature": "0x220895d9a43da3c360789d632c0fb6423277792f229dec5ac9e427dcaa96c62a217fa8faef4a720474cf9cc5ffec33a2c04546009ad5fbadeec4b27862d3222c1b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}