{
  "manageEntity": {
    "action": "Save",
    "entityId": "69109757",
    "entityType": "Track",
    "nonce": "0xd2dab64e7e84a9afae0a6138b1d9a2ebfc0da15316fa46744cb1a0280e403a9e",
    "signature": "0x364eafcff8afdca4a8e2c069e2a5f12314961d7719ff75dc8d8a7222df710bc4595d72e7c65aedc5b232d84671e16c3a2e5e707adda87f410552cd6bd393b91e1c",
    "signer": "0xC1896EAF7ae2431A08647A163291b5a8A0cd2a6C",
    "userId": "185209372"
  }
}