{
  "manageEntity": {
    "action": "Save",
    "entityId": "983682985",
    "entityType": "Track",
    "nonce": "0x73e1f37dac8d41a230cce5ba17d13f1e6cd117d778e0bd9943b01ce7e99ba851",
    "signature": "0x4388c65674ce1ca58fcfb2029399e39600e44800f615ad46d7b3311cb5de78143c8e7487a0699185ba9cd5d5bd7dabf4cb2cabc3e9210b23c34313717794b5411b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}