{
  "manageEntity": {
    "action": "Save",
    "entityId": "1174688893",
    "entityType": "Track",
    "nonce": "0xc1916d639301c47dba1e1e6f481d875f90dc21242ff64bee6374b603607d602c",
    "signature": "0xaab759ba6138995a4ac326a0ad4adb7e831bcce1abfc4266e0f0d0350547a734360507dcc0edf9d52b8723c02681f4f142b3419ca157e38b2527fb07e355bea51c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}