{
  "manageEntity": {
    "action": "Save",
    "entityId": "108917",
    "entityType": "Track",
    "nonce": "0x7264dbf016884b933ea046b7d77f3a24e2a5ce552e91ac988cc3f1878b14f04c",
    "signature": "0xcf0617907b2a7ac2ee18fce693602aec204031b09d9a7e581de14a65266125255c62b2fb6d3f4cd8118e93bd01ec834e11ea790a16958469da76294241f7f3af1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}