{
  "manageEntity": {
    "action": "Save",
    "entityId": "61645",
    "entityType": "Track",
    "nonce": "0xa0b675dd99f2495bc01a80cc07601f6d08e1ec1ab25f0e12b4f7f62901d08db5",
    "signature": "0x8ed5827e353243187125fe3d692dd6f7e270b64744148c10e73e08f3c39948cc28e5d6bda3ea0fb09e775ff19d82a33c71e879b5804c89cffa839fcc3676d7181b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}