{
  "manageEntity": {
    "action": "Update",
    "entityId": "757782215",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x74ef106718493d410507c9c6094b6fea0ba76446b529822420a9b416e7471fab",
    "signature": "0x6ab8543cacbbe77e714b2c6946925a423f4d1b047e4f4f21037292bcef3ab88d053c52319246f070bc3ccb00f4e9d53de1b130eca023d211786d1a58e2b3852a1c",
    "signer": "0xce8f5C07846a896F7B06174aa9e66865d33e2257",
    "userId": "757782215"
  }
}