{
  "manageEntity": {
    "action": "Update",
    "entityId": "667493918",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera2dvtep2uyatrghivizep7ybdj2vdgy7yzrlfnfkeeho4r4t3mveq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":526480428},{\"type\":\"playlist\",\"playlist_id\":569729679},{\"type\":\"playlist\",\"playlist_id\":1553511095},{\"type\":\"playlist\",\"playlist_id\":211400163}]}}}",
    "nonce": "0x8589e08de9874f32a599d895cdecb631ffa51b5290946e0749881a2fd53a3b37",
    "signature": "0x25647fb5ec6dee32134fc3e1e8feb57ec9fe1b1d0062e99eea633d4c5cac3cf21c21ca7fe69569c50b8e41490b7fc6082b92c095dc9257264742d9db1984e8461b",
    "signer": "0x8a3adbfB0485c717fC6824B71b6D0e03830f91b0",
    "userId": "667493918"
  }
}