{
  "manageEntity": {
    "action": "Update",
    "entityId": "661833713",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierafyburt47elr2fetrvlhekkjngmlrwlvzwlojceubxcprx3ba5ocq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":458654671},{\"type\":\"playlist\",\"playlist_id\":734268407}]}}}",
    "nonce": "0x10ba5f116b3f9b2c2ca6c4efcdb4e9b2da2e25a7891bee070ef7b4f0176ef15d",
    "signature": "0xdf72d4c101ac78d2137dc1b12ee2705c192ade20b66e4e960455784613d2bd80688a08020d408841fbeefa156a52ff2c412839552a771d8e8e1d2e134f63df2b1c",
    "signer": "0xA739dcF500cd89EB8c79d566B8724e0B1e992F6B",
    "userId": "661833713"
  }
}