{
  "manageEntity": {
    "action": "Update",
    "entityId": "412763370",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6035c7fe942eea2337bc82bf00bc661072e5e4dde06b5f88b0b55674715b4be8",
    "signature": "0xa186ae12753c77106bc4c3a554fdceac29b789842b663e1f67bb536c3c357f614299f9987e7c23886a8d1d9cfd65cc7bd986fe45a09625aba70410b3c921ea1c1b",
    "signer": "0xD6147D721FB3FfE66eF92dd41BC786f42c632522",
    "userId": "412763370"
  }
}