{
  "manageEntity": {
    "action": "Save",
    "entityId": "1634967564",
    "entityType": "Track",
    "nonce": "0x43e7fb56d560710efe8cd61ccc78a44dc554a3f517701403574a67cdca64fb9f",
    "signature": "0x5410403290d909f4d32280d205a14961c77d49e312c9caae16caaa36ae1a4e9a1a4fcbc168f0d19438c33618875414189baef888b5f329e6144adbde6bc8ac7b1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}