{
  "manageEntity": {
    "action": "Save",
    "entityId": "1984987774",
    "entityType": "Track",
    "nonce": "0x7ae8cfe829055c36361b78604cfb3079c703b6eab029e58194abca338ce909cc",
    "signature": "0x95a5fca1d25d709733fbf12f85ad00f8f26293334797e98b254e0d0cd70441591845d79a310895fccd1beebcd9f3c0637824b397ab2f2df0dd9cb4171cafb42a1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}