{
  "manageEntity": {
    "action": "Update",
    "entityId": "328797146",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierapzhloyxqimglsflolwbcdl4dpuu7oc6o5bcgksziboyuqd33uunq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1230068264}]}}}",
    "nonce": "0x7abf9ee9f3ea63dfb2467534358e692538c465f58b3157529be02bbd9c6993ec",
    "signature": "0xbdd77abe5943330189e1d5f113109cd5935e4c80e35081fa9280618bb15b8b8917ea46f0ff8c11d7eb3d01e2d081a3c2c3d8064fd1663856edbca0b378ad03411c",
    "signer": "0x5fFf561f49180ddDc64C036f9F45ae3910D35c54",
    "userId": "328797146"
  }
}