{
  "manageEntity": {
    "action": "Update",
    "entityId": "345792093",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraf4brefqhfdnw3xfg34bnwcm6i47eabd7snpwmq7zcweakyw3ancq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":76345954},{\"type\":\"playlist\",\"playlist_id\":1391876965}]}}}",
    "nonce": "0x6591a89c3194d94f486aadcaa4f71bf6020e5296e71f71ab09d5f7f28e18ca09",
    "signature": "0xa159c8214e9e76fd70f75d02b47868e820dede2296cf22015adcec3a5339e6dc06aff9701c90806d261164b61cd148f5b3f19d67693228b9f6968a7249c70c561c",
    "signer": "0x441F39B467Eb5d276bD5413c62C6f97231CAFDC8",
    "userId": "345792093"
  }
}