{
  "manageEntity": {
    "action": "Update",
    "entityId": "879475605",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6daf15f4cc4113e6392483dbb818d559716f17b3617a561da593b5d76007075b",
    "signature": "0xf8856f74abd8937d57a8885c75dbda283340c9398a3d3d42cf708d3a3443e46d2a391b3d54ea73eaf5e0ceebca82ff4e1dc76d0587f21703ae7c676b879467c31c",
    "signer": "0x17377E4Fa094Eb9e41fa2D81D3dD9E9558561A4a",
    "userId": "879475605"
  }
}