{
  "manageEntity": {
    "action": "Save",
    "entityId": "35601",
    "entityType": "Track",
    "nonce": "0xd3236ff9cf81bc46c1fd54ec4deabffe860e555d4f3ec534ef3f5f15bfcf0e53",
    "signature": "0xe0315113f47be09301655790a6d3c2e76b0a26069c3596f21766327d086fb9eb5a3633083cbf1523409cbe2bd8a7bf225f8ca057400fa7e316b25da933f6612d1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}