{
  "manageEntity": {
    "action": "Update",
    "entityId": "334514318",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera4qivzfxljcrnvyjxtmmypguqfy4kot3cdslqhgqunk2bcuxr2xyq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1249581295}]}}}",
    "nonce": "0xdd5a95070aecc4f6325a52e39f0b458c1d1b33c1930e64e5b86771db79ef47c7",
    "signature": "0xb5a0b14973d20712df8c529216a2975177b28c2b5e703edc121502c85abfb38945a7ff7712ba8a5c5615554dbfb616ced42b853eead476e0cace8009de69f3e01c",
    "signer": "0x7F0916698333586f53aE06102f6B6F71e2feb7ff",
    "userId": "334514318"
  }
}