{
  "manageEntity": {
    "action": "Update",
    "entityId": "75936402",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0033c641da27d334355d0867a27d7f6822107c10158c281897850d9c58dda124",
    "signature": "0x72d547a58cf52050582cfc9a87960951fa593a398cde9a29d40610915a380a8c551c2a2dc8efd61a1c81f04e365f5f9e83abed040a77a95eaa479acfe6c3a9051b",
    "signer": "0x4f47455CFc3De025Eb8020455e21493Afbd9E4ab",
    "userId": "75936402"
  }
}