{
  "manageEntity": {
    "action": "Save",
    "entityId": "2103163634",
    "entityType": "Track",
    "nonce": "0xa351a4b022ba02ae4a930b02a27cb02520ab9cc1f65aa7d6d8ef1edb77647e69",
    "signature": "0x6c04fc9762bb2509d8d8f19d81279d52c4be718d06a5e888e13820d4d2ff5f9b43fa75e7d1a8aee1f21adf2f75aa9bea3ecc871b5c81de5d8e79023ae1bbfe151c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}