{
  "manageEntity": {
    "action": "Update",
    "entityId": "602578939",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x92ee421b2c9eadfa110957287f3a8158a3b1468044a9e4f4c9d02dcae05fa676",
    "signature": "0x106f203dd11d4871f96825949dc6b0a599623beb8de5a5de3dd76caa00b5091d15e9552284690686127e7d8f80c514cdd2caa4ae3ba6fa7e292b2109780ba5121b",
    "signer": "0x50bFAcB550dd10f7b1961E18C6e92E3F41Ef306B",
    "userId": "602578939"
  }
}