{
  "manageEntity": {
    "action": "Save",
    "entityId": "2129227738",
    "entityType": "Track",
    "nonce": "0x15331c82c332e4cc687820d0945165139b44099487a819f8c25784886f84cfc2",
    "signature": "0xf04554daf14e8d1a7ed761ef1ce4ccfaa986ec80a54dc6191dd54159f43453a676a707eba99699185e6832f794c5ce2bade640a423f33de053fe61783264d3f11b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}