{
  "manageEntity": {
    "action": "Save",
    "entityId": "1817982946",
    "entityType": "Track",
    "nonce": "0x6e150321c26602477a3b59f63e9be7c2c29d615c4464b2ec46cfd277f9c3009b",
    "signature": "0x80d6c1bc77abab5a5587365181ae3aaa39f4032fd3f66ef54eb7ff152e71daa738919704f6ec0472fdedd0160a3c5501089b803d1cfb803d33a40b2caed563b61b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}