{
  "manageEntity": {
    "action": "Save",
    "entityId": "1928606630",
    "entityType": "Track",
    "nonce": "0x3a9d8fd85dd4f19f4d55f16d603724ae951636b0d5a4bb73452c5f3d68f61d81",
    "signature": "0x94cb0d1945ae09ae42ba993df3ea34a238688218dc1507b7489bf3ac70ba38e36771d0653faa57825094968c42390d04f9046891a1f0886b3cb1529b6d6b55651b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}