{
  "manageEntity": {
    "action": "Save",
    "entityId": "1309584964",
    "entityType": "Track",
    "nonce": "0x432572d6e88da255a28b56f061be65be14fd5423373e80061884f2bedcd875d2",
    "signature": "0x07d8bbcd9a3c5d814c87a5f4abda45f107ef5999c1bd702a1ed17af45d5fe8764628a7b1b238e245f95000657b68675d0cff2a2ddacda3eaf3095337e94b66ef1b",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}