{
  "manageEntity": {
    "action": "Update",
    "entityId": "157709188",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x698c4b349e8d9593a390be5e43a129d227f734ec84f1a826dc1e9569fd29334c",
    "signature": "0x197ef17a291879ffdaa3c73b0c7445f6fc209ddc717d155a0d3cb1332b15c15d203dbebe0216e9cc2edf3ae1bbca6b8ff5ea9829dc711781b346418e8e176e151c",
    "signer": "0x4184E4f0efE61101565663bC500940db9E79C69e",
    "userId": "157709188"
  }
}