{
  "manageEntity": {
    "action": "Update",
    "entityId": "752216692",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x784ca3802a4e17d15168380e19c75e0714d4229590d16e7e4d7160b3d838e23c",
    "signature": "0x0fff733f1ec5fbd2e2661c2927e5d51f7b47d4571b1f7930e09afb0f041b949c01e719cf6edd785ed5d7eb5eade81fdf1c0a042a2b899e7890c6f5e667939c151b",
    "signer": "0x6C8138f3a50A32f35F1042dd46c838019d3F03b1",
    "userId": "752216692"
  }
}