{
  "manageEntity": {
    "action": "Save",
    "entityId": "68710968",
    "entityType": "Track",
    "nonce": "0xcd734ee76a679ecaf0ca740a9d2028a3682c3f5f5f96d6bf9e81e6bb18a7fa02",
    "signature": "0xc1583f5f366fac001e93490cacb7a9fa4c02e1b4d6c55f7d760cc1831dec38c729d65a3de5c53f2340dd627cdca0d4d1ac4ca89e760cb0f65c8c80bcabf96e971b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}