{
  "manageEntity": {
    "action": "Update",
    "entityId": "137744695",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralhcp5rtpmtf5636k4v5mwf7zrxr2pbnfquct7axkcj2poqqurqrq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1356007076},{\"type\":\"playlist\",\"playlist_id\":2031035983},{\"type\":\"playlist\",\"playlist_id\":370197351}]}}}",
    "nonce": "0xb9219e4570d4417aef3b14900dd622463f39cb6fced48f3e430b32fba78b5bbc",
    "signature": "0x86d7f400885d2f149f958176b02ed32e1777b5ca59a3a47a7ab3cd6f0325cae87f7fdeff795bba70f2d11425828db94ed3c671c9d95a24f6f1b6ca27f031aeb11c",
    "signer": "0x997892Ba3dA104CdcAb8b169555d48E2884F6eC3",
    "userId": "137744695"
  }
}