{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x42ada6ece81c2ab2e736f30dc1517b16166d67dc2357e0db408d1504b733e725",
    "signature": "0x4abf5eba26268a35fa67e7764080e1e398ffbec7df08b8b598ca462d9ef59b2f19e477d8ca3498bf41c2376154618be85f770f753f19cd0222b90ab39b1a65d81c",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}