{
  "manageEntity": {
    "action": "Save",
    "entityId": "209319",
    "entityType": "Track",
    "nonce": "0xa4567756a8d646f3d42b0e246f964974bc9a1823c9cb71ee3949544b1eed2eb9",
    "signature": "0x5bf4204685282100c2d032d21d76bf4d6482475dd544e70c1fe93bed2a4b70ba657949c84dcbe165f33c146c27063b18b910b577dfda1eafa0e9ec42fb891e4e1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}