{
  "manageEntity": {
    "action": "Update",
    "entityId": "820705315",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x351f59d3091ed6eed436cb5134e0d9b03c1dd2a83d5356d80827e043a0c1b854",
    "signature": "0x39aa1b19d483189cb90bbaef5e9308f96fe5325f53ff13c008b1393422e4798d640d40e35cede62c51f2b56022d3d14d223692cd930efe24702a671aaabcd1481b",
    "signer": "0x3a6d9Afe6CDd1C057eD5C1A8d504E6F956675D35",
    "userId": "820705315"
  }
}