{
  "manageEntity": {
    "action": "Update",
    "entityId": "785201",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4bdfc78931362ce63f3b97e6ef9d9a6fb1348adb5bc380b432addf2579ed20f2",
    "signature": "0x9c091d6ac4d6518dbcab826f20748074ae50bb87f8d9ff2f06d4a4c921f0f6f574625ab72b00133af3220f59e2240dc619f5a982dc8293ec4ce4c7f7e2bdaced1b",
    "signer": "0x7C3854df2708D5dc9d22bA310Bc0f73C074f0321",
    "userId": "785201"
  }
}