{
  "manageEntity": {
    "action": "Update",
    "entityId": "971129804",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratnsnp4xxdneggo7wtzznxjd2plo3hssfxzrkijj67oojn7ausvaa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":940553898},{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1972733550}]}}}",
    "nonce": "0x896d54ba29289a5ffeb3babe4d89a5460e825cb8803a239876d6d80ee576b6d3",
    "signature": "0x12d4fc835443b97f7b6c5800edbb52baee2c41a0519af9def433a1c7e821ecaf3932f39f356ef2767875e53648e28f0778787bb2d85de0bf457cd159a6d550251b",
    "signer": "0x3e48DC5763519fbdE0A26db7C59929E8Bb6B8Fe2",
    "userId": "971129804"
  }
}