{
  "manageEntity": {
    "action": "Save",
    "entityId": "282969",
    "entityType": "Track",
    "nonce": "0xf03ee4273f00a654bf7146b868f55cf23b7c9f80ceee46d902ac6b5ca9a95dd1",
    "signature": "0xf6986c3116a18b7fc053c9b28fb5fc2590ad5163b48d9cc0e133a26879826ca76df6c6b41906c852778598e32ad346087bacddf509a2fdfd982d6ba714ae87d71b",
    "signer": "0x0e08C058dE1787206F03B99840c282498259E9C4",
    "userId": "589495545"
  }
}