{
  "manageEntity": {
    "action": "Update",
    "entityId": "571162458",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x77d8dd8fe147bfc8d085029bde9525bf1d0e4ebe8fbc53126bb0f14a8b48778b",
    "signature": "0x6b20e9bd8129456f7dc2a2e4f6d692abdb36925ae9191d59242fd8f7c03fcf5b57e6c65982781237a291403f3c97c725b956dbb46e9f7edc3defb4779fe005881c",
    "signer": "0x54d5C666b27904DFA3C076806c46998e5bF8348b",
    "userId": "571162458"
  }
}