{
  "manageEntity": {
    "action": "Update",
    "entityId": "770787877",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x20d35e7d596913d8c7cfd65c56d2e52ed75493efadf554f71c5edb2b6fe4c315",
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    "signer": "0xE18110b460c1ae037aB2F40BBfb715Ee5a1f65bA",
    "userId": "770787877"
  }
}