{
  "manageEntity": {
    "action": "Save",
    "entityId": "568754",
    "entityType": "Track",
    "nonce": "0xd1bc33e0e486529997bbe3c0676b35f6aeadc50d3078a571451a2fe83290f077",
    "signature": "0x2572d400d7d07fb1362cb03ddb2a68fdf55f2673433caa3fded12433be579aa22591ac90b3d83841ce7dfd3ed9d00f124c5483e5a5df880961f2c9b5a33789511b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}