{
  "manageEntity": {
    "action": "Update",
    "entityId": "406716751",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9f18da11e6c8b0cbc96fc59934d1623e09ac8ff25adfe14beb880925111e5e68",
    "signature": "0x273b1fc2369caf50f2574274e1ee61de23976bb437955941fab40ca41fafb46f01aec1aff80a04957b3bb78dbe75c06e9af571e2c221848cbec7d3077a0a29601b",
    "signer": "0x31eba27Ca105bABB3B8590b9A71b07C6d1e7c747",
    "userId": "406716751"
  }
}