{
  "manageEntity": {
    "action": "Update",
    "entityId": "678712034",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdf44d29888395b608a9adbd7dca29cebe9ee17a1e983233fa5e861f297b1718d",
    "signature": "0xaa2bc07719e3cb28d33e68376a35acdbcceaf66d78ef10b4be3fe16182c4188b39067522e044e47c0da4496497999b196fc7900ba2578647f240263f58b242c21c",
    "signer": "0x949D917CA0cCBb6F4447A252f6c61FcB31FEf48D",
    "userId": "678712034"
  }
}