{
  "manageEntity": {
    "action": "Save",
    "entityId": "532792954",
    "entityType": "Track",
    "nonce": "0x2548ef8d860a3076e0fd624f4d54775f3114d11edeb2fff16bad5189d63fdbf2",
    "signature": "0xb6660fb437f6cecb6ad4accfa4c4a9f3245a5af69b0cc2ed2fcd0110f42512887e07a1121ba0ca7a3c3fb5934196dfc08f60f908afe08b3f63887fae67e077521c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}