{
  "manageEntity": {
    "action": "Update",
    "entityId": "406716751",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x369ea5c33e0a23eb489d59bb2ebe618b5cce2ec6e6d5324351da6ff1b89fed06",
    "signature": "0xb80c72b1a642ed66a6e0ea5172a6dd45de4ee7988cc877cbac4614814df3d32636da43672d21e701b51d32d515d831eb924c9c7ed82b3c52b89390ebe9b6bd871b",
    "signer": "0x31eba27Ca105bABB3B8590b9A71b07C6d1e7c747",
    "userId": "406716751"
  }
}