{
  "manageEntity": {
    "action": "Update",
    "entityId": "420043742",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0b643164b915320b91783bebb8cde6464e4f6f2af2962911fa2b88c176de6c14",
    "signature": "0x41799ea60618fd6d18c18c9bb02c4b73bcd258e2a273c0193913630748267e8c19759999e1e85d5a5357c3e4b3adcb70991aa0f89c17161b9f6aeec4f888d6f61c",
    "signer": "0x9B5FC7AD63009742c0592d3BFfFc7ac6D255e0cF",
    "userId": "420043742"
  }
}