{
  "manageEntity": {
    "action": "Update",
    "entityId": "371177303",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9c72a2921b701555de0123161ef6c1d59e45a1f0bd75e0da7f6d2301a7763f4e",
    "signature": "0x56b0f0d859666906c7f64446e2e6a47d67059dca9e05db7754b844c434a8b00c25a1c43d9e16764be8527cdda06bb2bd7982d3b4a4d8df1d79eb92a2107fe69a1b",
    "signer": "0xF3A94D6e0Ea920B336e33180e0F34f028Aba8F5f",
    "userId": "371177303"
  }
}