{
  "manageEntity": {
    "action": "Save",
    "entityId": "805176",
    "entityType": "Track",
    "nonce": "0x03fe8e28c3a9f9b16105f2921e6b195fda792185dabcbcff09497ad895c1a39e",
    "signature": "0xf79907ca9b57b375afd2d707d17e0cd9f7b3986c80216355a5120fab21ec2e5500313be20ea55544f304bd8a1583ae4de81292ab0cad4386c45a262e1d9e249c1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}