{
  "manageEntity": {
    "action": "Save",
    "entityId": "483707648",
    "entityType": "Track",
    "nonce": "0x33815a8fa1e937e958551a24cce30b33e10ee8d1110bc8cc2946e10a6819def4",
    "signature": "0x754bd592eab995e1d672ea3e827bbf45406fa5629f19af823ac49bfa9ea970f93e8d3cc74685922e60ac918e4e9ee951c8d63e60d1a996d843074ce1380d63e01b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}