{
  "manageEntity": {
    "action": "Update",
    "entityId": "728713419",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbc7b61ef72e1edf17a32a04e8bbda75d7373d50d03ea7c37415f21489c6d8ae9",
    "signature": "0x22bb5c9528740254f774a9080d494fed4f4d6bec2927da04a5bad16009194bb05a4b423486bdc973e46f5ff5b04a63a9b8f42a81c90571363730f5f030d1986a1b",
    "signer": "0x9E887e026105e890d22b9B4c6aFda62b5026c49F",
    "userId": "728713419"
  }
}