{
  "manageEntity": {
    "action": "Save",
    "entityId": "367597058",
    "entityType": "Track",
    "nonce": "0xc56c9ab13565d8bf13e89852654a8e1f3b6b3b7a2e2f3a436c51ed833332b95e",
    "signature": "0xb364bbbeb03dcc6d0ed42dea889da60db07f234053e2984603a3d843ef2ccb482d54b87a7ad48056f879a12a6ef6d7dcc20486d6df7c3f7706bf1057d800808d1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}