{
  "manageEntity": {
    "action": "Update",
    "entityId": "425407904",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratpsbaept5ly22knwwmf77e4cznkfwps7u7tiyfgxarsh6xqmo5ha\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1453584539}]}}}",
    "nonce": "0x6573b065c54e963e179d8eb70593a1cfde6f374f5ccac60c6e51ca02056de7c6",
    "signature": "0xa53d704a3fb0567cec6fd6cf1fca6cdafa84a985c1e1da4cb6c23237130d26225d43ae33d299cb0952a79cc4ef0a9afa951a64e8c90c5a132cb9b18cba5e9eff1b",
    "signer": "0x5A844c4357CB1A8239DD72D5162046f958b59DA9",
    "userId": "425407904"
  }
}