{
  "manageEntity": {
    "action": "Save",
    "entityId": "715660225",
    "entityType": "Track",
    "nonce": "0x56679c607d15fba626df3babc7d879c8c54b3fe9c579dc28bb55296fb88c3837",
    "signature": "0xb9f631b6278180fcc3b077b938bbffccb6fac9f5d4abb9d54ab7d5fe3bed24b82f7777c9356f8a721be8a16372a7687a561c7c1fd1c84a64b87e90b3e084739c1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}