{
  "manageEntity": {
    "action": "Save",
    "entityId": "2055543337",
    "entityType": "Track",
    "nonce": "0xc1d498fa9faa08fd2ca244f8444ebaa4f647aa225a267f5645cc6799b0cf6d79",
    "signature": "0xc56ea0fee57fe25917211e34ec16c8a86b5b0bf07d41108a01e14619adfeb9ca024831ebd742c8225dfb24f05eb79d770eac45bc4bfd75ff4107f1853236c0911c",
    "signer": "0x4089d1751487aA665C895419F2578a6Cf33BE481",
    "userId": "728155533"
  }
}