{
  "manageEntity": {
    "action": "Save",
    "entityId": "1614466810",
    "entityType": "Track",
    "nonce": "0xf8791d3850df654df9244af2d17aef35fa39a00b57b692027031a7a714d98083",
    "signature": "0x05371ba7f79fb0ea9620a1a3c2a0a868aae6e3b683c95a810731b28d11f182973701bfc6fdf6a03f9759686211048605ed526099a15964e60497f5042a684d7a1b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}