{
  "manageEntity": {
    "action": "Update",
    "entityId": "6838510",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraeftbggylcduz7zp3wgpczma667mq62mckv2h25yulnhphtrjbjva\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":46674903},{\"type\":\"playlist\",\"playlist_id\":768401314}]}}}",
    "nonce": "0xa94186ee0b4e082b2d75b5af4ebca1d5f5edd19e6314d03aee01f7a2d37d93ad",
    "signature": "0xce80c4f284117d0fa2fbbeb59f1d16aceddd0cf815110005176473fe657b4a9a0a4eaf08d70bf817a14f69b634b4b40159ea95f3726ee8a99b2a09612079074f1c",
    "signer": "0x58Fd15cF8652ad74664BE5E78b4D09ab32Ce73Bd",
    "userId": "6838510"
  }
}