{
  "manageEntity": {
    "action": "Update",
    "entityId": "599973709",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x51a6d6ac572d637e30b83251c91dc56dd6ed690b6f900c8a03c459c7dd98d465",
    "signature": "0x5f640a80eb57e8630d7303e95c217d797dfd7c686c88e32f4d330e3780b41d343bbae3d587fb92aed3014bdae9b927d336e8b64fcfd13fad1e0f21cb03094adc1b",
    "signer": "0x6A65482563D42729663f117B039625DA5065D1ae",
    "userId": "599973709"
  }
}