{
  "manageEntity": {
    "action": "Save",
    "entityId": "11645482",
    "entityType": "Track",
    "nonce": "0x2ca113a51697bb8b04b3908e660b4bd7a603e746461c5b1f822beed7e671aa55",
    "signature": "0xf7a8ceb48f856f003d406174a3f31488246a2c3c94c004ee58172987ce6b3b5a1f0ab885e495fc5cd9150a5cdbb68e762d208bce3cd358400961c873f3beed7a1b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}