{
  "manageEntity": {
    "action": "Update",
    "entityId": "831576253",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb88f0442d8e78527f8c9e18c0499c8e4b21d9f7fd2a7c680ebbca5b46779fae8",
    "signature": "0x7faef917ab294a4edbc13039e27ea89832e2074d9d12b83c4bf04e14efb36b8946f6465e89686998fc2c315a9ccbbcac3765f699cc5d3df8a80dd4c7ddf31e2c1c",
    "signer": "0x27F3C5c949E94015081295B3Aa297DB58D3f0b78",
    "userId": "831576253"
  }
}