{
  "manageEntity": {
    "action": "Update",
    "entityId": "977294736",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe19f9463d3f40e7017b75c4bc1e7ee4116248aadbc884918f68195c5b15d031f",
    "signature": "0xbe7c6ddc4859161d8a3406bca1bc352cf48273728a4fbc1c51aa3502ecdfaf7c61e53ce1ac9feafecb0a8e1386a9a84358d15e95933237f148a9fb68eb7380711b",
    "signer": "0x6D083A8068F758f0b1EcF99c1788D7F450A20F5d",
    "userId": "977294736"
  }
}