{
  "manageEntity": {
    "action": "Update",
    "entityId": "877657773",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe492f5339164a2d1ce5da5b398163ec8aaa302afbc59c693d4225373b21bc3cd",
    "signature": "0xcf05eaad9b4ccba6bd67796bfd5dce64edecb324df00f8b5437ff0d5e023463f68f92d0daf3f236f0bdf5a6c9ca2e98e3bffb995cde86a9c7de16e2749eb11081b",
    "signer": "0x3f900FCC34Df497be04653343010288eaf3B190f",
    "userId": "877657773"
  }
}