{
  "manageEntity": {
    "action": "Save",
    "entityId": "180648319",
    "entityType": "Track",
    "nonce": "0x39e129f85d501f3732b9ce24684776c47fad4e3d56d266edfdcf245ec55b9024",
    "signature": "0x605c2a83969f97cd3aa028f3b2b9730e6860d28e4031cd7c3f60e5c768a830fd228fc6927b9b92fd2dc7d3b11eac71045dd9d59a4a756f3ccbbe2be5b53253d71b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}