{
  "manageEntity": {
    "action": "Update",
    "entityId": "354350915",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbee7385704d15e5fb80eeef0e0de19de0bf1fdbc76ea8f66447b355164a05fbd",
    "signature": "0x978715eaffefabffdeae959959bb96a980c0d966fab10310b22eed750beefb570c3d700409af9c9949704dd4193d498f1c84ef05200e0cbfefd7ae0249d43ab11c",
    "signer": "0xA1126d3f1652629109D872d1aec07Dc2Ef6Bb6f1",
    "userId": "354350915"
  }
}