{
  "manageEntity": {
    "action": "Update",
    "entityId": "537528609",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcaef7293fe6bddacffeb393c5fbf4f37bc47729c7253cb715c73050aa10d4db4",
    "signature": "0x725ce4ab2b1956876068c1e5059b1c041a18ea80e499b69aca648dab7685d21963215df6b4403b1cec86322153bbf58d8caf2f2e465887f961b7009b08f9c0a91b",
    "signer": "0x27fe505A105a761994196F32091F5672586FD0cF",
    "userId": "537528609"
  }
}