{
  "manageEntity": {
    "action": "Save",
    "entityId": "46701",
    "entityType": "Track",
    "nonce": "0x48515c24bbf69bfc1fad405c20b520b124b9b8083dc29a6ece6d9c90b3bd5c17",
    "signature": "0x5950b13722dd002d7741a8150f4c6ccf0fbdde598a28ce8d9cd7e45dce0e9a280ddf94ceb711ad089276f2f40869bb62aa5ae18a6d934cfb654df82b7088ad0d1b",
    "signer": "0xf63b89A0Bbc03C7ec59aC257C7082A056082cDB8",
    "userId": "558452493"
  }
}