{
  "manageEntity": {
    "action": "Save",
    "entityId": "1032907",
    "entityType": "Track",
    "nonce": "0x0bbf96c76f9da209162b46147b3c627360ddaa29aab28f6de6cacd88f1b453f4",
    "signature": "0xbada96faf3a884ab9cf968c902c5863304b86a8c7fcd6ee31fa0a78d78a62ff978d5e74780474b8987ffbc36fa5be241bcee62d42d544bf18dc6db60228b02cc1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}