{
  "manageEntity": {
    "action": "Save",
    "entityId": "2107629682",
    "entityType": "Track",
    "nonce": "0xee59df4aed8db0de7ffef1db13d5a0651b579583411706a5715dc1bc74e39a07",
    "signature": "0x43ead636898e7c3426e4446407d2d52d4b972bfe96998d29f0ed15918178d3df0ca298e0896ea15ac85ec4fa27f5d9a997a13914516a1fc822527e8b9d21f28d1b",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}