{
  "manageEntity": {
    "action": "Save",
    "entityId": "1427034838",
    "entityType": "Track",
    "nonce": "0xbd6c8b3969235af93dcfe9b9d51a2aa5409f9b1496f6e51ccb711655537fd33d",
    "signature": "0x3d38f7eb7868ff89e52abcba57c4a7fad39f3aaf959c16da7191fb70d6c2e30c03552ccc01fe8497effe33eba4b57c7c1a835eb0496cce8fc2662718878a09241b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}