{
  "manageEntity": {
    "action": "Update",
    "entityId": "431871384",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5f6c339267fcea6574326f7af3dbf9d73a9d59b75d3f754fb2a61ff6e293173b",
    "signature": "0x8b8eddc389df2c0a7951988584e763c1143bdc02fdaa3a653d254b581cc7a81c5650fe7f4136e632409ca34ee9f65958e4e400753e0e17230d40a2cdfe0d09511b",
    "signer": "0x4D523B6f94F20c51715094A97548DA8695Df3a0a",
    "userId": "431871384"
  }
}