{
  "manageEntity": {
    "action": "Save",
    "entityId": "297801181",
    "entityType": "Track",
    "nonce": "0x95a2b29e1bf0b6251e1a04902bdf549ca328b58a84d7e8819e414ceaa6dd6bc3",
    "signature": "0x399a05770ab6d74ca54f124f81b80c5666c5e2126e5aeda0345658926f4206b44d6b4eb58b99c2435e723d7cbc42806c29bb192e8f9fb346280a2793f509e6901b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}