{
  "manageEntity": {
    "action": "Update",
    "entityId": "178678516",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x215dcb2408038a08f13bd54a9c4914fe00c85236b1ff63320e2477e4e1f5893a",
    "signature": "0x32f5a4f81c7e97407e8d231ec55fe031c9df277f6b0a5c3f94d00b90c0d54b895551ff8d8e516485abc5bb87d37da61205327cbea2c8ebc52e72922cc7d26a4a1b",
    "signer": "0x9c0E158fd6a79ba8384938c72F34b5D765d2A9Df",
    "userId": "178678516"
  }
}