{
  "manageEntity": {
    "action": "Update",
    "entityId": "722170571",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2e5a8fc7bef7b11e3f10498bc21c9d6a8916a383dfeefeca0397a92349d5f2c2",
    "signature": "0xf4057c7000a528489d1f30d5644a9c993ba420a43ecf49f06480e431f6e7e7ce1746a4390678ff964640c2ed7946133026951950ba20a1533ea36b041de6155b1c",
    "signer": "0x1657F91A40e77eEc0b7fCaBCaaE2079eBdE800C3",
    "userId": "722170571"
  }
}