{
  "manageEntity": {
    "action": "Update",
    "entityId": "208431511",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierauszf6l6dgf6j43m4bh6wgfw42obrevaqy52ieedndqu3iyk3z7ea\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":37967}]}}}",
    "nonce": "0x7c24385d4e60a5ef198652f3b0aa4b062751ade58116cf78c520cd7bbe5e001a",
    "signature": "0x593e50176029cd64ca73f3215ffbcabd24d8d5a00b7eb2163c7475dba8a5b4196d491c326816e4b32a9fbf572ede4510f3111d7b8dc7f2ab033221725fa6f57a1c",
    "signer": "0xdf555AE1cDda83689Ca8307CbD9048AF27b89b69",
    "userId": "208431511"
  }
}