{
  "manageEntity": {
    "action": "Update",
    "entityId": "331441829",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8a7cc630509d482996947665c821124a69fa6f9f460b600e8e54e631ba3eec8b",
    "signature": "0x1c02f0b6f59078952bdc3b656151ee7ee3aa5b7be5e2b6078674f67becc6824063ef0b89002517b086db243afc3a10ed3c6b1f3af10f5b6768743cc15351daad1c",
    "signer": "0xe915bF72b4fD2bcCE07667Fb2fB07c09c5FF318A",
    "userId": "331441829"
  }
}