{
  "manageEntity": {
    "action": "Update",
    "entityId": "639689916",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieranfgehwcvb4xdog34fn2jaygyajlbmv54kcfh77eqnt5kjwkddfwa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2101872463},{\"type\":\"playlist\",\"playlist_id\":841313453},{\"type\":\"playlist\",\"playlist_id\":374545448},{\"type\":\"playlist\",\"playlist_id\":1099675304},{\"type\":\"playlist\",\"playlist_id\":138683162}]}}}",
    "nonce": "0x50d30ede5bc3c8802ced1075208a4bd623a2cf729b67be838f05e41fbb9525a8",
    "signature": "0x3f86c88e4b0a8b16450dab2ae45cdfa9c1d97f62f13be50cae1ed509463eff32095d368d94bec787df2fb1127813cc5ac559ad909c8945942303bc8ac5f3239b1c",
    "signer": "0xC2f75Abe54443BaC80f6e53a97BeB0E4d3a71fF2",
    "userId": "639689916"
  }
}