{
  "manageEntity": {
    "action": "Update",
    "entityId": "876735576",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0af6a756b8d97aae1a244c07399aaee2c7d3a6d57593499ce39631b3ca03c64a",
    "signature": "0x5963de227c62c1b6391918eec18dd4ca0277c2150fa06dc789c31422de8bb9215760e694acd7d7cc311b068ffb279c822fee59d93ddf4276f359829a8b8de4661c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}