{
  "manageEntity": {
    "action": "Save",
    "entityId": "22860",
    "entityType": "Track",
    "nonce": "0x1609a6ac8d6c2d3b13602f2e21a8418def40b2f795b6939afa7dbd2a0e4b0416",
    "signature": "0x2cccb6c3071d123153dfafb730987da2d487e968c5f837e705e0f56b11147b2c7dcd5edfc93503bce5ebf3b43acd7c60babd1be15db3c207599f6f85bbc820c31c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}