{
  "manageEntity": {
    "action": "Save",
    "entityId": "924577439",
    "entityType": "Track",
    "nonce": "0xa02ebab4838224f6edaf78805bfde3b68a1180ee4b71954f4a600e4e6c65fcd4",
    "signature": "0xbc09356f90c8ffb16c543a1046d97a438d904302ca4aef20372ce8dda96150b559ef433ae9d195ec75981651ec0934d86837413d48e332e625166d5950fea9751b",
    "signer": "0x1d79DfBeB190891D70B510899f34F44eaFDef495",
    "userId": "450694809"
  }
}