{
  "manageEntity": {
    "action": "Save",
    "entityId": "1764211468",
    "entityType": "Track",
    "nonce": "1794072968492044899",
    "signature": "0x3363c3108f262a235abbbc78e747b8fece4a31ff2896940399546a966155c3cd47d2c92acfbb188f3dd652ae991f562b158a18cbb64ec086c08a7a43cbad85d51c",
    "signer": "0x060694061CeCdEFb501f6F79c67276F5d5A582eb",
    "userId": "605397581"
  }
}