{
  "manageEntity": {
    "action": "Save",
    "entityId": "1315029219",
    "entityType": "Track",
    "nonce": "0x3ad293b37fb4c3a4c1e7930840ffbec015ba17028b16d87484b7225e24bbe820",
    "signature": "0xb56faaa874aa4f7b760bc0c3ba43ecdf7b05e3929daa849d1872db88378c4fd918700c2cc0559dc282c00b11057b6e580254fd96c99af5be8fa9d78880c5ff471b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}