{
  "manageEntity": {
    "action": "Save",
    "entityId": "614173875",
    "entityType": "Track",
    "nonce": "0x2ee8bde576e26fac70173c8f8332f48170cc852fd58b542a7fc371a068961aee",
    "signature": "0x35c8a3280a866fee29032e13d566ff3cf34eee4d5a1ddff73406d9521ad93ab30816df67af138e1d50ce043cc2a4c878556b08c8cdb0ae56ff7d32afc496eca11c",
    "signer": "0x1a76E65C3D1F53eF48fF4cbdb57D26246F833c86",
    "userId": "94167"
  }
}